138373607 has 2 divisors, whose sum is σ = 138373608. Its totient is φ = 138373606.

The previous prime is 138373601. The next prime is 138373633. The reversal of 138373607 is 706373831.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138373607 - 2⁸ = 138373351 is a prime.

It is a super-2 number, since 2×138373607² = 38294510228380898, which contains 22 as substring.

It is equal to p_7825358 and since 138373607 and 7825358 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138373601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69186803 + 69186804.

It is an arithmetic number, because the mean of its divisors is an integer number (69186804).

Almost surely, 2^138373607 is an apocalyptic number.

138373607 is a deficient number, since it is larger than the sum of its proper divisors (1).

138373607 is an equidigital number, since it uses as much as digits as its factorization.

138373607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 138373607 is about 11763.2311462455. The cubic root of 138373607 is about 517.2308504178.

The spelling of 138373607 in words is "one hundred thirty-eight million, three hundred seventy-three thousand, six hundred seven".